Shutters for a background on the table. Sometimes used on the ends of the tables for separation from next booth. The frames are made from strips of wood and hinged together. On the back are L-brackets at the bottom, one on each shutter. Those are used to clip the shutters onto the table with large spring-clamps. Fabric is stapled on the back of the frames to fill the holes.
I use clip on lights on the shutters, and also use the shutters to hang necklaces for display. Knobs attached to a thin strip of wood and attached to the top of the shutters.